Composition of matter used for protecting the walls of retorts, &amp;c.



UNITED STATES Patented July '7, 1903-.

PATENT 7 OFFICE.

THOMAS J. CARLTON, OF IOLA, KANSAS.

SPECIFICATION formingpart of Letters latent No. 732,707, datedJuly 7, 1903. Application filed November 21, 1902. Serial No. 132,319. (No specimens.l

T0 aZZ whom it may concern.-

Be it known that I, THOMAS J. CARLTON, a citizen of the United States, residing at Iola, in the county of Allen and State of Kansas, have invented a new and useful composition of matter to be used to protect earthen retorts in smelters and furnaces and to save metal from being absorbed into the walls of said retorts, of which the following is a specification.

My composition consists of the following ingredients, combined in the proportions stated, viz: water, substantially pure, fifteen gallons; cobalt, twenty-five ounces; black lead, (graphite,) twenty-five pounds 5 burnt powder of fireclay, ten pounds; saltpeter, (potassium nitrate,) one pound. These ingredients are to be thoroughly mingled by agitation.

In using the above-named composition the retorts or earthen vessels should be thoroughly coated both inside and out with said composition about four hours beforebeing placed in the kiln where the retort or vessel is heated and hardened.

By the use of the above composition the coating on the outside of the retort protects the retort from iron, zinc, or other metals which may drip or percolate through the furnace, thereby acting as or serving the purpose of a retort fender or protector.

By the use of the above composition the coating on the inside of the retort prevents the metal which is being melted in the retort from being absorbed into the walls of the retort, thereby acting as or serving the purpose A of a retort metal-saver.

What I claim, and desire to secure by Letters Patent of the United States, is

1. The herein-described composition of mat- THOMAS J. CARLTON.

Witnesses:

J. W. BOLTON, W. D.. COPE. 

